Science Cells And Heredity Flashcards
Microscope
An instrument that makes small objects look larger.
Cells
Cells are the basic units of structure and function in living things.
Cell Theory
The cell theory is a widely excepted explanation of the relationship between cells and living things.
Element
Any substance that cannot be broken down into simpler substances.
Compound
When two or more elements combine chemically. I
Carbohydrates
Made of carbon hydrogen and oxygen.
Lipids
Like carbohydrates they are energy rich compounds made of carbon hydrogen and oxygen.
Proteins
Large organic molecules that are made of carbon hydrogen oxygen nitrogen and in some cases sulfur.
Amino acids
What protein molecules are made of.
Enzyme
A type of protein that speeds up a chemical reaction in a living thing.
Nucleic acids
Long organic molecules made of carbon oxygen hydrogen nitrogen in phosphorus.
DNA
The genetic material that carries information about an organism and is passed from parent to offspring.
RNA
ribonucleic acid
Diffusion
The main method by which small molecules move across the cell membrane.
Osmosis
The diffusion of water molecules through selective permeable membrane.
Selectively permeable
Which means some substances can pass through the membrane while others cannot.
Passive transport
The movement of dissolved materials through so membrane without using cellular energy.
Active transport
The movement of materials through cell membrane using cellular energy.
Photosynthesis
The process by which a so captures energy in sunlight and uses it to make food.
Autotroph
An organism that makes it’s own food.
Hetrotroph
In organism that cannot make its own food.
Pigment
Colored chemical compounds that absorb light.
Chlorophyll
The main photosynthetic pigment in chloroplasts.
stomata
A small
